High Server Load / High Swap / Lots Of Httpd
Feb 20, 2008
I have a cPanel server with 4GB RAM
My server hangs time to time, once or twice a day. This is the last status when it happens.
Server Load 75.90 (2 cpus)
Memory Used 92 %
Swap Used 65.78 %
When I was still inside SSH when it happens, the processes I can see inside "top" are a lot of httpd processes.
So I "killall -9 httpd", I had to do it 30~40 times
#killall -9 httpd
#killall -9 httpd
#killall -9 httpd
x 30~40 times until no pid process found & the server load is back to normal.
Before that, I check httpd fullstatus, they look very normal, same goes to what I see inside WHM Apache status & cpu usage status.
At first I thought it was a memory problem after consulting with a server admin, so I replaced all 4GB new ram stick (such a waste)
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Nov 19, 2007
I have a linux server that is only hosting one site , and although the httpd and mysql are working well , then the server load is high and when I restart the server the server load is high till the swap accelerates to 100% and then it uses the memory alot.
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Mar 23, 2008
a topic long time ago that my server load is frequently high.
I'm talking about something like this
Server Load 158.86
Memory Used 28.2 %
Swap Used 99.57 %
[url]
The only way to solve this problem is to identify the load earlier and kill all httpd process. What I did was
#killall -9 httpd
#killall -9 httpd
#killall -9 httpd
x 30~40 times until no pid process found & the server load is back to normal.
On previous thread, I tried to update mysql & php and it works,
Right now again I am experiencing high server load again...
I'm very sure it's caused by httpd but I am still unable to find out the real cause of the problem and which account user is the culprit for causing this high load.
Can someone assist me by telling me where/how to begin with?
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Jun 6, 2008
I was getting high load on one of our test machines -- it was high enough to where I couldn't ssh in. However, I happened to have a shell open at the time with top running. Load was very high and swap was full. -- afterwards, when I check /var/log/messages it looks as if the load affected the time (see below).
1) At first I was guessing that the load somehow affected the clock, but you'd think it would slow it down -- but apparently the pace of time was quicker?
2) perhaps the time was wrong in the first place - then upon reboot, ntp sync'd up properly.
3) time was originally correct but after the high load, it somehow erroneously sped up the ticks
Then again, from googling around someone on another forum was saying that the computer clock chip shouldn't ever be affected.
So my question isn't about what cause the load, but why was there a time descrepancy in /var/log/messages, and was it related to the load?
from top:
top - 17:52:32 up 246 days, 23:34, 1 user, load average: 76.52, 75.68, 68.79
Tasks: 192 total, 62 running, 129 sleeping, 0 stopped, 1 zombie
Cpu(s): 0.0% us, 99.5% sy, 0.0% ni, 0.0% id, 0.0% wa, 0.2% hi, 0.2% si
Mem: 3376168k total, 3281060k used, 95108k free, 256k buffers
Swap: 4192956k total, 4192956k used, 0k free, 95656k cached
from /var/log/messages:
Jun 5 17:34:44 staging kernel: Out of Memory: Killed process 26522 (oracle).
Jun 5 17:41:45 staging sshd(pam_unix)[25223]: session closed for user gin
Jun 5 17:09:50 staging syslogd 1.4.1: restart.
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Nov 14, 2014
This is my free -m
total used free shared buffers cached
Mem: 1998 1903 95 0 45 542
-/+ buffers/cache: 1315 683
Swap: 2662 36 2625
Not good ....
I got 5 wordpress and 5 statics website on this server and 100 visitors by 24H00 each day.
Question 1 : Why the memory is so low and the swap so high ?
Question 2 : Why i don't find high usage process in top command ?
Question 3 How can i resolve this problem ?
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Mar 1, 2007
I have a e-card site. The e-mail and mysql are on other server, so this server only run apache.
load average: 25.52, 23.53, 26.48
Tasks: 125 total, 22 running, 97 sleeping, 0 stopped, 6 zombie
Cpu(s): 90.1% us, 9.3% sy, 0.0% ni, 0.0% id, 0.0% wa, 0.6% hi, 0.0% si
Mem: 2059596k total, 1443196k used, 616400k free, 210660k buffers
Swap: 2048276k total, 148420k used, 1899856k free, 451924k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
28864 nobody 15 0 10684 8120 2272 S 5.0 0.4 0:00.63 /usr/local/apache/bin/httpd -DSSL
28837 nobody 15 0 44348 40m 2272 S 4.0 2.0 0:02.13 /usr/local/apache/bin/httpd -DSSL
28872 nobody 15 0 7728 5220 2276 S 4.0 0.3 0:01.31 /usr/local/apache/bin/httpd -DSSL
28846 nobody 16 0 10708 8132 2288 S 3.4 0.4 0:00.94 /usr/local/apache/bin/httpd -DSSL
28855 nobody 15 0 7604 5104 2268 S 3.4 0.2 0:01.11 /usr/local/apache/bin/httpd -DSSL
28830 nobody 15 0 7604 5108 2272 S 3.1 0.2 0:01.50 /usr/local/apache/bin/httpd -DSSL
28874 nobody 15 0 7696 5176 2268 S 3.1 0.3 0:00.96 /usr/local/apache/bin/httpd -DSSL
28876 nobody 15 0 7716 5212 2272 S 3.1 0.3 0:01.25 /usr/local/apache/bin/httpd -DSSL
28968 nobody 15 0 7664 5212 2272 S 3.1 0.3 0:01.46 /usr/local/apache/bin/httpd -DSSL
28838 nobody 16 0 7744 5220 2276 S 2.8 0.3 0:00.96 /usr/local/apache/bin/httpd -DSSL
28844 nobody 16 0 7656 5132 2276 R 2.8 0.2 0:01.51 /usr/local/apache/bin/httpd -DSSL
28845 nobody 15 0 10580 8124 2272 S 2.8 0.4 0:00.51 /usr/local/apache/bin/httpd -DSSL
28869 nobody 16 0 7668 5144 2276 S 2.8 0.2 0:01.29 /usr/local/apache/bin/httpd -DSSL
28873 nobody 16 0 7704 5212 2272 S 2.8 0.3 0:01.13 /usr/local/apache/bin/httpd -DSSL
28960 nobody 16 0 7608 5112 2276 S 2.8 0.2 0:00.72 /usr/local/apache/bin/httpd -DSSL
29023 nobody 15 0 7604 5108 2272 S 2.8 0.2 0:00.59 /usr/local/apache/bin/httpd -DSSL
28858 nobody 15 0 7696 5128 2272 S 2.5 0.2 0:01.24 /usr/local/apache/bin/httpd -DSSL
Current Time: Thursday, 01-Mar-2007 14:41:43 EET
Restart Time: Thursday, 01-Mar-2007 14:37:06 EET
Parent Server Generation: 0
Server uptime: 4 minutes 37 seconds
Total accesses: 5468 - Total Traffic: 15.1 MB
CPU Usage: u34.89 s1.41 cu6.72 cs3.37 - 16.7% CPU load
19.7 requests/sec - 56.0 kB/second - 2904 B/request
38 requests currently being processed, 0 idle servers
WWWWWWWWWW.WWWWRWWWWWWWW.WRWWWWWWWWWWWWW........................
................................................................
................................................................
Timeout 30
MaxKeepAliveRequests 100
KeepAlive Off
KeepAliveTimeout 15
MinSpareServers 10
MaxSpareServers 18
StartServers 10
MaxClients 50
MaxRequestsPerChild 50
apache_1.3.37
how to optimize apache?
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Oct 31, 2009
My server is very slow, High CPU, High Apache load....
I got a new server and i had setup a script on it.
No server tweaks has been done.
I run a filehosting site so it gets very slow when traffic is high.
Here is some info:
Code:
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
4135 filedip 19 0 12812 8892 2212 R 18.9 0.4 0:00.74 index.cgi
3140 apache 15 0 22624 9604 2768 S 17.3 0.5 1:54.45 httpd
3556 apache 15 0 22792 9592 2768 S 17.3 0.5 0:43.53 httpd
3739 apache 15 0 22672 9556 2744 S 17.3 0.5 1:09.67 httpd
3884 apache 15 0 22664 9560 2744 S 17.3 0.5 0:23.98 httpd
3474 apache 15 0 22672 9572 2756 R 16.1 0.5 1:34.09 httpd
3548 apache 15 0 22792 9560 2740 S 16.1 0.5 1:33.67 httpd
3991 apache 15 0 22640 9588 2756 S 15.1 0.5 0:22.44 httpd
3475 apache 15 0 22672 9580 2756 S 13.2 0.5 1:31.42 httpd
3493 apache 15 0 22664 9592 2768 S 12.9 0.5 1:15.52 httpd
3769 apache 15 0 22664 9580 2756 S 12.9 0.5 0:45.19 httpd
3638 apache 15 0 22664 9576 2756 S 12.3 0.5 0:32.82 httpd
3724 apache 16 0 22664 9580 2756 R 12.3 0.5 0:34.25 httpd
3626 apache 15 0 22672 9580 2756 S 11.7 0.5 0:52.54 httpd
4023 apache 16 0 22792 9560 2740 R 11.3 0.5 0:13.16 httpd
3882 apache 15 0 22664 9576 2756 S 10.1 0.5 0:38.56 httpd
3005 apache 15 0 22672 9588 2768 R 9.1 0.5 2:06.61 httpd
I dont know much about server managment...
how to fix this so server doesnt go slow?
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Jul 2, 2009
I have a site that is eating up my server resources and need to know what the best solution for this is. I'm thinking of getting another server just for mysql but do not know what specs the server should be to handle the current traffic/database load and have the site run smoothly without slowing down to a snail's pace.
An alternative is to get another server just for the videos being served and leave the database and html on the current server. This is where I'm stuck and don't know what route to take with this.
My current server stats:
Dual Xeon 5130
4GB RAM
250GB
50 Mbit/sec
CentOS 3.9
Website traffic stats:
15,000 visitors/day
150,000 pageviews/day
Serving videos
I've attached screenshots of top and bandwidth usage per day. Hopefully with this information you could tell me if I need another server or if there are any things I can do to the current server to help things move faster.
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Apr 5, 2008
i have 10 web sites running on my server, but they are really small talking about traffic, according to statistics, my "star web site" have 300 visits per day
I also have a few shoutcast services running on my server, but i think ther are fine
According to cpanel, yesterday I had this cpu usage (only showing the top process)
User Domain %CPU %MEM MySQL Processes
nobody 79.10 25.07 0.0
and here you go a copy op "top" command in shell
Cpu(s): 39.5%us, 57.8%sy, 0.0%ni, 20.6%id, 0.0%wa, 0.0%hi, 1.2%si, 0.0%st
Mem: 2065856k total, 1464804k used, 601052k free, 71616k buffers
Swap: 2048276k total, 0k used, 2048276k free, 955020k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
10345 nobody 20 0 29484 16m 3360 R 21 0.8 0:41.87 httpd
10874 nobody 20 0 20416 9792 2852 R 20 0.5 0:10.19 httpd
10340 nobody 20 0 25748 12m 2928 R 14 0.6 0:28.20 httpd
4309 sc_dieg2 20 0 44288 4116 1788 S 1 0.2 0:18.59 sc_serv
4176 sc_maxi 20 0 37004 2816 1064 S 1 0.1 0:14.76 sc_serv
4244 sc_salme 20 0 37004 2688 1080 S 1 0.1 0:12.73 sc_serv
4316 sc_dieg3 20 0 44288 4392 1752 S 1 0.2 0:17.48 sc_serv
4352 sc_sergi 20 0 39684 3264 1320 S 1 0.2 0:19.24 sc_serv
4413 sc_eddyo 20 0 39684 2892 1368 S 1 0.1 0:16.68 sc_serv
4420 mexicanr 20 0 38524 1916 588 S 1 0.1 0:11.28 sc_serv
4534 sc_entor 20 0 38680 2720 1264 S 1 0.1 0:13.05 sc_serv
9547 root 20 0 2388 1076 796 R 1 0.1 0:09.37 top
4116 sc_jocuh 20 0 36848 1988 576 S 0 0.1 0:11.25 sc_serv
4553 sc_aleja 20 0 89004 8332 6864 S 0 0.4 0:11.94 sc_serv
6829 120 20 0 5988 2156 1664 S 0 0.1 0:01.64 glftpd
11166 root 20 0 7044 2332 1868 S 0 0.1 0:00.01 sshd
1 root 20 0 2136 644 556 S 0 0.0 0:00.82 init
2 root 15 -5 0 0 0 S 0 0.0 0:00.00 kthreadd
3 root RT -5 0 0 0 S 0 0.0 0:00.00 migration/0
4 root 15 -5 0 0 0 S 0 0.0 0:00.18 ksoftirqd/0
5 root RT -5 0 0 0 S 0 0.0 0:00.00 watchdog/0
6 root RT -5 0 0 0 S 0 0.0 0:00.00 migration/1
7 root 15 -5 0 0 0 S 0 0.0 0:00.13 ksoftirqd/1
8 root RT -5 0 0 0 S 0 0.0 0:00.00 watchdog/1
9 root 15 -5 0 0 0 S 0 0.0 0:00.02 events/0
10 root 15 -5 0 0 0 S 0 0.0 0:00.02 events/1
11 root 15 -5 0 0 0 S 0 0.0 0:00.00 khelper
62 root 15 -5 0 0 0 S 0 0.0 0:00.08 kblockd/0
63 root 15 -5 0 0 0 S 0 0.0 0:00.17 kblockd/1
66 root 15 -5 0 0 0 S 0 0.0 0:00.00 kacpid
67 root 15 -5 0 0 0 S 0 0.0 0:00.00 kacpi_notify
196 root 15 -5 0 0 0 S 0 0.0 0:00.00 cqueue/0
197 root 15 -5 0 0 0 S 0 0.0 0:00.00 cqueue/1
199 root 15 -5 0 0 0 S 0 0.0 0:00.00 ksuspend_usbd
205 root 15 -5 0 0 0 S 0 0.0 0:00.00 khubd
I tried to kill all "nobody" process, and then is everythin OK but after 5 minutes is happening again, the worst thing is that every minute this cpu usage is increasing untillall my web sites crashes (just website , shoutcast service works fine)
the process os "nobody" is: /usr/local/apache/bin/httpd -k start -DSSL
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Jul 29, 2009
after installed php 5.2.10
nobody /usr/local/apache/bin/httpd -k start -DSSL
Code:
5896 nobody 0
81.5
1.3 /usr/local/apache/bin/httpd -k start -DSSL
mysql (5.0.81-community)
os : centos 5.3
Has been very fast server. Guide is accurate and if you leave.
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Mar 31, 2009
I've got a dedicated with LW.
I've had it for a while and during that time I've never seen the swap memory go over 20%.
A month or so ago, I had the server upgraded to 8GB of ram to make room for more planned sites.
Since then, the swap memory has gone rampant. It regulary goes to 93% used with less than 20% of the regular ram and really no load on the server.
I've contacted support twice about it and was told don't worry it's normal.
From what I've read in the cpanel forum, no it's not normal and may in fact be caused by bad ram chips and if it hits 100% could freeze the server.
There are no processes or users causing it, so It's something else.
Has anybody had this type of problem that they resolved and could share what they did to resolve it?
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Jul 2, 2008
I am running in a High load problem lately. I have one of those cheap 1and1 servers which was running fine until 2 weeks ago. Once I rebooted accidentaly, it did not come back with some unrepairable kernel errors and I had to re-image it.
I chose to reimage the server with CentOS 5, for better support. The new re-image worked fine for some days, at least so I thought and now I am having high loads. The server crashes if not monitored every moment as the load is unpredictable.
Just a restart of the Apache will bring the server back to normality, but I am not sure if it is apache or some other script to be blamed.
I have beeing monitoring through apache server-status, but I cannot organize something unusual in the high load moments.
At this moment for example:
top - 09:00:36 up 15:43, 3 users, load average: 3.57, 4.60, 5.32
Tasks: 144 total, 2 running, 142 sleeping, 0 stopped, 0 zombie
Cpu(s): 10.6%us, 6.5%sy, 0.0%ni, 18.7%id, 63.5%wa, 0.2%hi, 0.5%si, 0.0%st
12:00:29 AM CPU %user %nice %system %iowait %steal %idle
12:10:01 AM all 9.14 0.00 5.52 44.66 0.00 40.68
12:20:14 AM all 6.83 0.00 3.98 27.88 0.00 61.32
12:30:10 AM all 6.44 0.00 4.20 81.25 0.00 8.11
12:40:09 AM all 5.25 0.00 4.09 81.93 0.00 8.73
12:50:15 AM all 5.11 0.00 3.79 90.74 0.00 0.36
01:00:07 AM all 7.22 0.00 4.52 57.11 0.00 31.15
01:10:13 AM all 6.89 0.00 4.01 55.38 0.00 33.71
01:20:14 AM all 4.37 0.00 3.27 41.88 0.00 50.48
01:30:25 AM all 4.26 0.00 3.29 63.42 0.00 29.03
01:40:06 AM all 27.18 0.00 4.75 58.27 0.00 9.80
01:50:03 AM all 29.64 0.00 6.61 51.50 0.00 12.25
02:00:07 AM all 27.00 0.00 8.48 55.49 0.00 9.03
02:10:10 AM all 19.29 0.00 4.97 73.80 0.00 1.94
02:20:04 AM all 37.85 0.00 6.78 40.70 0.00 14.67
02:30:05 AM all 15.65 0.00 4.80 68.47 0.00 11.08
02:40:08 AM all 9.06 0.00 5.60 37.49 0.00 47.86
02:50:07 AM all 5.36 0.00 3.62 42.29 0.00 48.73
03:00:02 AM all 6.05 0.00 4.08 47.27 0.00 42.60
03:10:02 AM all 4.22 0.00 3.68 38.17 0.00 53.93
03:20:02 AM all 4.06 0.00 3.75 41.37 0.00 50.82
03:30:22 AM all 4.42 0.00 3.93 45.25 0.00 46.41
03:40:11 AM all 4.34 0.00 3.95 39.58 0.00 52.13
03:50:02 AM all 4.67 0.00 4.01 32.53 0.00 58.80
04:00:08 AM all 3.72 0.00 3.87 28.40 0.00 64.02
04:10:02 AM all 13.49 0.00 6.58 20.82 0.00 59.10
04:20:01 AM all 6.70 0.00 4.63 6.06 0.00 82.61
04:30:02 AM all 1.44 0.00 1.21 4.75 0.00 92.59
04:40:01 AM all 12.42 0.00 8.12 7.65 0.00 71.81
04:50:02 AM all 1.43 0.00 1.07 4.02 0.00 93.47
05:00:02 AM all 1.60 0.00 1.40 8.62 0.00 88.38
05:10:10 AM all 3.80 0.00 3.02 17.86 0.00 75.32
05:20:06 AM all 5.10 0.00 4.22 23.34 0.00 67.34
05:30:02 AM all 1.54 0.00 1.40 11.22 0.00 85.85
05:40:05 AM all 1.75 0.00 1.89 13.12 0.00 83.23
05:50:12 AM all 2.15 0.00 2.22 18.92 0.00 76.72
06:00:02 AM all 1.92 0.00 2.01 12.87 0.00 83.20
06:10:02 AM all 2.27 0.00 2.16 11.53 0.00 84.04
06:20:03 AM all 3.56 0.00 3.02 25.26 0.00 68.16
06:30:10 AM all 2.66 0.00 2.05 18.13 0.00 77.16
06:40:02 AM all 2.58 0.00 2.25 22.87 0.00 72.30
06:50:02 AM all 2.68 0.00 1.92 15.77 0.00 79.63
07:00:03 AM all 3.06 0.00 2.48 26.01 0.00 68.46
07:10:03 AM all 3.65 0.00 3.20 36.54 0.00 56.61
07:10:03 AM CPU %user %nice %system %iowait %steal %idle
07:20:03 AM all 4.40 0.00 3.28 43.86 0.00 48.46
07:30:02 AM all 4.10 0.00 3.17 31.30 0.00 61.43
07:40:06 AM all 7.67 0.00 3.95 50.79 0.00 37.59
07:50:02 AM all 4.72 0.00 3.11 44.30 0.00 47.86
08:00:03 AM all 5.57 0.00 3.72 47.15 0.00 43.56
08:10:07 AM all 10.66 0.00 3.59 71.62 0.00 14.13
08:20:17 AM all 5.67 0.00 3.42 58.81 0.00 32.10
08:30:10 AM all 11.12 0.00 3.49 76.71 0.00 8.67
08:40:03 AM all 7.00 0.00 3.36 47.94 0.00 41.71
Average: all 7.53 0.00 3.76 38.90 0.00 49.81
Some configurations:
The reimage partittioning looks like this:
/dev/sda1 950M 138M 765M 16% /
/dev/sda5 4.7G 1.9G 2.9G 40% /usr
/dev/sda7 63G 58G 5.0G 93% /var
/dev/sda6 4.7G 23M 4.7G 1% /home
none 1.0G 500K 1.0G 1% /tmp
KeepAlive On
MaxKeepAliveRequests 300
KeepAliveTimeout 15
<IfModule prefork.c>
StartServers 10
MinSpareServers 20
MaxSpareServers 50
ServerLimit 256
MaxClients 180
MaxRequestsPerChild 2000
</IfModule>
<IfModule worker.c>
StartServers 2
MaxClients 150
MinSpareThreads 25
MaxSpareThreads 75
ThreadsPerChild 25
MaxRequestsPerChild 0
</IfModule>
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
skip-locking
query_cache_limit=1M
query_cache_size=32M
query_cache_type=1
max_connections=250
interactive_timeout=100
wait_timeout=20
connect_timeout=10
thread_cache_size=80
key_buffer=64M
join_buffer=1M
max_allowed_packet=16M
table_cache=512
record_buffer=1M
sort_buffer_size=1M
read_buffer_size=1M
max_connect_errors=10
thread_concurrency=2
read_rnd_buffer_size=1M
myisam_sort_buffer_size=64M
server-id=1
processor : 1
vendor_id : GenuineIntel
cpu family : 15
model : 3
model name : Intel(R) Pentium(R) 4 CPU 2.80GHz
stepping : 4
cpu MHz : 2793.324
cache size : 1024 KB
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Nov 8, 2008
I have extremely high CPU load average, but when I run TOP command there are not any process with high CPU
CPU load averages:
211.65 (1 min) 227.29 (5 mins) 247.89 (15 mins)
Tasks: 364 total, 2 running, 360 sleeping, 2 stopped, 0 zombie
Cpu(s): 0.0%us, 0.3%sy, 0.0%ni, 0.0%id, 99.7%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 2065460k total, 2012372k used, 53088k free, 60964k buffers
Swap: 2040212k total, 3280k used, 2036932k free, 619900k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
19871 root 15 0 4944 2488 1656 R 1 0.1 0:02.73 top
1 root 15 0 4208 1320 1136 S 0 0.1 0:01.55 init
2 root RT 0 0 0 0 S 0 0.0 0:00.00 migration/0
3 root 34 19 0 0 0 S 0 0.0 0:01.77 ksoftirqd/0
4 root RT 0 0 0 0 S 0 0.0 0:00.01 migration/1
5 root 34 19 0 0 0 S 0 0.0 0:01.16 ksoftirqd/1
6 root 10 -5 0 0 0 S 0 0.0 0:01.04 events/0
7 root 10 -5 0 0 0 S 0 0.0 0:00.65 events/1
8 root 10 -5 0 0 0 S 0 0.0 0:00.00 khelper
9 root 11 -5 0 0 0 S 0 0.0 0:00.00 kthread
35 root 10 -5 0 0 0 S 0 0.0 0:00.15 kblockd/0
36 root 10 -5 0 0 0 S 0 0.0 0:00.00 kblockd/1
37 root 15 -5 0 0 0 S 0 0.0 0:00.00 kacpid
127 root 10 -5 0 0 0 S 0 0.0 0:13.16 ata/0
128 root 16 -5 0 0 0 S 0 0.0 0:00.00 ata/1
129 root 10 -5 0 0 0 D 0 0.0 0:01.15 ata_aux
130 root 10 -5 0 0 0 S 0 0.0 0:00.00 kseriod
158 root 16 0 0 0 0 S 0 0.0 0:00.00 pdflush
159 root 15 0 0 0 0 D 0 0.0 0:01.00 pdflush
160 root 10 -5 0 0 0 S 0 0.0 0:10.68 kswapd0
161 root 11 -5 0 0 0 S 0 0.0 0:00.00 aio/0
So my server is "unresponsive" for abour 18 hours, burst net didnt answer my tickets and I dont know what to do. Ive been with this setup for almost 5 months with no problems, No changes have been made to hardware or software.
Im using Centos 5.0
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Feb 18, 2007
i have a problem with my server it is a Xeon with 2Gb ram, i have a igh swap usage and when it reach the size of 4gb that i have set it go in kernel panic, this is the actual value
top - 14:19:47 up 1 day, 23:07, 1 user, load average: 1.74, 1.93, 1.89
Tasks: 223 total, 5 running, 217 sleeping, 1 stopped, 0 zombie
Cpu(s): 39.8% us, 6.6% sy, 14.0% ni, 32.3% id, 7.3% wa, 0.0% hi, 0.0% si
Mem: 2074640k total, 1980804k used, 93836k free, 66200k buffers
Swap: 4192924k total, 1735588k used, 2457336k free, 365136k cached
total used free shared buffers cached
Mem: 2026 1877 148 0 61 306
-/+ buffers/cache: 1509 516
Swap: 4094 1699 2394
maybe i can work on KeepAlaive setting?
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Jan 20, 2007
Quote:
total used free shared buffers cached
Mem: 1034060 1004864 29196 0 50756 340272
-/+ buffers/cache: 613836 420224
Swap: 1020088 373648 646440
Is there anything I can do to reduce the swap usage?
Running cpanel, Dual Xeon 3.0ghz with 1 gb ram
Quote:
root@****** [~]# uname -a
Linux ****** 2.6.9-42.0.3.EL.cernsmp #1 SMP Fri Oct 6 12:07:54 CEST 2006 i686 i686 i386 GNU/Linux
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May 7, 2009
do you know what my server having very strange problem my server load suddenly increas after every 2 or 3 days some time after 1 days but when we talk about those days in which server load is fine then that time server load very low almost 0.4 to 0.1 .
But on that high load day server load reached upto 500.
when i try to find out what wrong then i only get that there is too much connection of http when i kill httpd through this killall -KILL httpd then server load suddenly decrease and then stable.
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May 27, 2007
I have a couple of sites that are generating errors because the server load is too high and when I check service status I am seeing the following: Server Load 21.49 (8 cpus)
How can I tell if the problem is one of my sites in my VPS or a different site on a different VPS on the same server?
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May 9, 2007
server load is too high, can you suggest why too many process of qmail-smtpd even i stopped qmail and there is no more 25 emails in queue.
top - 22:26:03 up 8 days, 5:56, 0 users, load average: 150.96, 150.27, 142.68
Tasks: 183 total, 150 running, 33 sleeping, 0 stopped, 0 zombie
Cpu(s): 99.0% us, 1.0% sy, 0.0% ni, 0.0% id, 0.0% wa, 0.0% hi, 0.0% si
Mem: 4167500k total, 146416k used, 4021084k free, 0k buffers
Swap: 0k total, 0k used, 0k free, 0k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
20168 qmaild 25 0 3468 1432 1168 R 3.3 0.0 2:55.27 qmail-smtpd
20208 qmaild 25 0 3468 1432 1168 R 3.3 0.0 2:43.98 qmail-smtpd
20320 qmaild 25 0 3468 1432 1168 R 3.3 0.0 2:38.56 qmail-smtpd
20425 qmaild 25 0 3468 1432 1168 R 3.3 0.0 2:31.09 qmail-smtpd
20444 qmaild 25 0 3468 1432 1168 R 3.3 0.0 2:27.97 qmail-smtpd
5413 qmaild 25 0 3468 1432 1168 R 3.3 0.0 1:00.38 qmail-smtpd
5705 qmaild 25 0 3468 1432 1168 R 3.3 0.0 0:57.91 qmail-smtpd
5763 qmaild 25 0 3468 1432 1168 R 3.3 0.0 0:57.40 qmail-smtpd
5806 qmaild 25 0 3468 1432 1168 R 3.3 0.0 0:56.99 qmail-smtpd
5999 qmaild 25 0 3468 1432 1168 R 3.3 0.0 0:55.98 qmail-smtpd
7318 qmaild 25 0 3468 1432 1168 R 3.3 0.0 0:53.39 qmail-smtpd
7639 qmaild 25 0 3468 1432 1168 R 3.3 0.0 0:51.43 qmail-smtpd
7866 qmaild 25 0 3468 1432 1168 R 3.3 0.0 0:50.29 qmail-smtpd
7980 qmaild 25 0 3468 1432 1168 R 3.3 0.0 0:49.59 qmail-smtpd
8023 qmaild 25 0 3468 1432 1168 R 3.3 0.0 0:49.29 qmail-smtpd
8101 qmaild 25 0 3468 1432 1168 R 3.3 0.0 0:48.48 qmail-smtpd
9253 qmaild 25 0 3468 1432 1168 R 3.3 0.0 0:47.40 qmail-smtpd
9355 qmaild 25 0 3468 1432 1168 R 3.3 0.0 0:46.78 qmail-smtpd
9386 qmaild 25 0 3468 1432 1168 R 3.3 0.0 0:46.48 qmail-smtpd
9525 qmaild 25 0 3468 1432 1168 R 3.3 0.0 0:45.84 qmail-smtpd
9611 qmaild 25 0 3468 1432 1168 R 3.3 0.0 0:45.81 qmail-smtpd
9854 qmaild 25 0 3468 1432 1168 R 3.3 0.0 0:44.89 qmail-smtpd
9974 qmaild 25 0 3468 1432 1168 R 3.3 0.0 0:44.08 qmail-smtpd
11272 qmaild 25 0 3468 1432 1168 R 3.3 0.0 0:42.29 qmail-smtpd
11331 qmaild 25 0 3468 1432 1168 R 3.3 0.0 0:42.09 qmail-smtpd
11482 qmaild 25 0 3468 1432 1168 R 3.3 0.0 0:41.69 qmail-smtpd
11652 qmaild 25 0 3468 1432 1168 R 3.3 0.0 0:40.99 qmail-smtpd
12040 qmaild 25 0 3468 1432 1168 R 3.3 0.0 0:39.41 qmail-smtpd
3530 qmaild 25 0 3468 1432 1168 R 3.0 0.0 1:08.48 qmail-smtpd
12246 qmaild 25 0 3468 1432 1168 R 2.0 0.0 0:38.79 qmail-smtpd
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Apr 22, 2007
I know there are thousands of topics about this and yes i did use search function to try doing some changes myself and didnt wanna hijack someone else's topic so started my own
well my problem is i run a torrent site which puts a lot of load on my server. Just got upgraded to P4 2.8 ghz with 2GB ram , iam running fedora with WHM/Cpanel
i will do anything with server to put load down cos of load i have turned off my 4 other big sites ...
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Jun 9, 2008
there are lot of sessions /task running of httpd by user nobody.
Due to this my server load going very high.
I am use opreting system fadora and cpanel latest version.
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Nov 23, 2007
the site is running fine..
i have increased my maxclients from 256 to 320 ( reset all same ) my load has increased from avg 3 to 8.. is it a prob?
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Mar 24, 2007
I've got a server that suddenly over the last three days has exploded as far as server load. Watching top I have some httpd processes that are using up all of the cpu and lasting for quite some time. How can I find out more about these hanging processes? I need to track this down as quickly as possible and find out what the cause is.
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May 17, 2014
Our server is running; Plesk 11.0.9 and CentOS 5.7 it has a Q8200 CPU @ 2.33GHz and 2GB of RAM. Now there are just two websites on the server plus a couple of redirects/forwarding domains, although lots of domains are still on the server but turned off in Plesk. Both websites are OSCommerce sites and I just need to keep these sites going until the end of the year when we will switch to our new Joomla based website.
We have seen an increasing number of server crashes and after various checks of the logs, fitting a new BIOS battery, check of the hardware by EasySpace who host the server, installation of ClamAV, LMD and RKHunter (which did find some Trojans and Suspect software), I have traced it down to some external Http activity that is taking all of my CPU time and RAM. Here is a screen capture of the Htop listing and when I killed these processes the CPU and RAM went back to normal. The problem is that I usually have to restart the HTTPD service and sometimes things get so bad that the server crashes and I have to request a power cycle.
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Apr 20, 2009
We have an abnormal server load because of clamd.
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May 4, 2008
if upgrading to that new server that I'll mention will probably solve my problems. Whatever help you can provide would be greatly appreciated. Below are the details:
In the GMT evenings and nights my current server gets so loaded that every page load takes 10 - 30 seconds. Even the pure html pages will be so slow to load. It seems that after a certain treshold it just suddenly becomes that much slower. Not much middleground there. I have high MaxClients and ServerLimit values now and the error log doesn't say that they are exceeded anymore but that didn't help enough.
I have a high traffic website that is using latest version of apache (2.2.x) with the prefork MPM and apache is optimized, PHP 5.2.5 and APC 3.0.15.
I get 160,000 - 210,000 pageloads per day. 32,000 - 45,000 visits per day.
Most of its pages are PHP but shouldn't be too CPU or databes intensive. Mysql isn't used and I mostly used sharedmem (php's shm functions) for databases. 2 semaphores are quite heavily used but that can't explain how a few more users would make the server serve pages so much slower.
Swap usage is practically 0 and CPU user % usage is like 1 - 2 % and CPU system % is also about the same even during peak times. However the Average Load or whatever that "top" reports is 6 - 9.
My current server scecs: 1 GB Ram, Pentium D 3 ghz, CentOS 5 32bit fully updated.
I load all pictures and even the stylesheet from a secondary server by using href="$secondaryserverIP..." in the html code, so the main server practically just serves the pages.
My new server will have apache with the worker MPM and latest versions of every software. Also its specs are: 2 GB of RAM, Intel Dual Core Xeon 2.40GHz, CentOS 5.1 32bit fully updated.
I have a sophisticated netstat based ddos script that is an improved version of DDoS Deflate and while some of these slowdowns seem to have been caused by attacks that it then was able to defend me from, most of them are not. I am even protected from users who constantly have 7+ connections to my site and if someone has a way too high number of connections, the script won't even check if it constantly has it and the script just bans that user outright. It probably is banning a bunch of innocent proxy users too but that is a small price to pay.
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Jun 18, 2008
Alright we just bought a new customer aboard with a ChatBox on the site it seems as if this chatbox is causing higher load we went from 0.00 to 0.68-1.12 now this happened on our old server before too with another chatbox. They use vBulletin any ideas as to what would be causing this?
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Feb 13, 2008
When i check the server status is shows a high server load.
How do I lower the server load? it looks like for mysql activity.
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Dec 18, 2008
MySQL the last few days seems to be constantly the most demanding process in top, which it never was before. As far as I can tell, nothing has substantially changed with regards to traffic to MySQL driven sites on the server. Is there anything that might be wrong with the databases, etc., that might throw MySQL into a tizzy?
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Jul 28, 2009
I have two quad core processors and load is like 15.
May it be caused by switch if it doesnt let traffic trough properly?
if dmesg grep eth shows 100 full duplex is it normal or should it be 1000 full duplex?
how can I make it 1000 full duplex on centos 5?
Quote:
0000:0a:02.0: eth0: (PCI Express:2.5GB/s:Width x4)
0000:0a:02.0: eth0: Intel(R) PRO/1000 Network Connection
0000:0a:02.0: eth0: MAC: 3, PHY: 5, PBA No: ffffff-0ff
0000:0a:02.0: eth1: (PCI Express:2.5GB/s:Width x4)
0000:0a:02.0: eth1: Intel(R) PRO/1000 Network Connection
0000:0a:02.0: eth1: MAC: 3, PHY: 5, PBA No: ffffff-0ff
ADDRCONF(NETDEV_UP): eth0: link is not ready
0000:0a:02.0: eth0: Link is Up 100 Mbps Full Duplex, Flow Control: RX/TX
0000:0a:02.0: eth0: 10/100 speed: disabling TSO
ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
ADDRCONF(NETDEV_UP): eth1: link is not ready
0000:0a:02.0: eth1: Link is Up 100 Mbps Full Duplex, Flow Control: RX/TX
0000:0a:02.0: eth1: 10/100 speed: disabling TSO
ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
eth0: no IPv6 routers present
eth1: no IPv6 routers present
ADDRCONF(NETDEV_UP): eth0: link is not ready
0000:0a:02.0: eth0: Link is Up 100 Mbps Full Duplex, Flow Control: RX/TX
0000:0a:02.0: eth0: 10/100 speed: disabling TSO
ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
ADDRCONF(NETDEV_UP): eth1: link is not ready
0000:0a:02.0: eth1: Link is Up 100 Mbps Full Duplex, Flow Control: RX/TX
0000:0a:02.0: eth1: 10/100 speed: disabling TSO
ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
eth0: no IPv6 routers present
eth1: no IPv6 routers present
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Mar 11, 2009
I am currently hosting my website on one server with the specs:
2.8ghz Dual Quad-Core processor + 8 gigs of ram + two 500 hard drives with a 50 mbps unmetered bandwidth package.
My current problem lies in high server loads and very slow server performance throughout the day.
I am considering migrating over to The Planet onto server with the specs:
3.0ghz Dual Quad-Core + 18 gigs of ram + two 50gb hard drives with 2TB of monthly bandwidth transfer.
In an attempt to have great bandwidth pricing and server performance, I plan on downgrading my current server with my current host to a lowe-end server and keeping it only to host my VIDEO and MUSIC files with the 50mbps unmetered package. The Planet will then host my database and all other web related files on their new server.
Is this a good idea as an attempt to save money in bandwidth costs and eliminating my server lag issues?
I was offered a setup of a separate web and database server at my current host but from what I have read, no one touches the performance and reliability The Planet has to offer.
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Oct 29, 2009
I have server load like 40.
Nothing lags.
Server has RAM usage 20% and CPU usage goes up to 25%
Swap isnt used at all.
Should I be afraid of server crash incase server load goes up to 60 or 80 without ram and cpu usage rising that much?
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